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by silverchris
Sat May 17, 2014 2:42 am
Forum: Linux Kernel
Topic: gpio_to_irq and kernel 3.8
Replies: 4
Views: 4917

Re: gpio_to_irq and kernel 3.8

I have finally come back to this project after a long break. I have a max3107 hooked up, and works for a short period of time, but seems to cut out after a minute or so, I am not sure the exact reason, but have a feeling it has to do with the SPI driver, or the interrupt code
by silverchris
Wed Jun 05, 2013 6:42 am
Forum: Linux Kernel
Topic: gpio_to_irq and kernel 3.8
Replies: 4
Views: 4917

gpio_to_irq and kernel 3.8

Hello, I am attempting to get a max3107 working with the raspberry pi usign the max310x driver. I am unfortunately stuck with trying to set up its IRQ. I am using GPIO pin 25 for its irq. In arch/arm/mach-bcm2708/bcm2708.c I have a function to set the irq: static int __init bcm2708_max310x_init(void...
by silverchris
Sat Mar 23, 2013 8:28 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: SPI, Interrupts and a MAX3107
Replies: 3
Views: 3102

Re: SPI, Interrupts and a MAX3107

So from some preliminary googling, it looks like I can interrupt on any of the GPIO pins, decided I better order a Pi to play with.
by silverchris
Fri Mar 22, 2013 4:35 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: SPI, Interrupts and a MAX3107
Replies: 3
Views: 3102

Re: SPI, Interrupts and a MAX3107

This would be going on a custom board, it is going to be an embedded project. I need to the uarts to talk to a gps and a microcontroller. The max310x driver looks like it requires an interrupt to tell when the uart has received data, and I am just unsure if a state change on a GPIO pin can be used f...
by silverchris
Thu Mar 21, 2013 4:54 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: SPI, Interrupts and a MAX3107
Replies: 3
Views: 3102

SPI, Interrupts and a MAX3107

I am considering a project using the Raspberry Pi, and I need more then a single UART for what I am doing. I would prefer not to have to resort to USB to serial bridges. My plans are to use a MAX3107 IC to add a single UART, or possibly two of them. The problem I am having is that I am not sure if I...

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